HVAC System (Heater, Ventilator and A/C)
COMPRESSOR
AC-15
2. FUNCTIONS
As the rotor rotates, the volume of each cylinder chamber changes. This creates the compressor’s
suction, compression and discharge functions as explained in the following:
1) Suction:
Low-pressure gaseous refrigerant is forced out from the evaporator by rotation of the compressor.
It enters the low-pressure chamber in the rear head through the check valve. The refrigerant is
then drawn into the cylinder by rotation of the vane-fitted rotor through the two suction ports pro-
vided in the rear side block. Air tightness of the cylinder chambers is maintained by the compres-
sor oil.
2) Compression:
Further rotation of the rotor after suction makes the volume of each cylinder chamber smaller, thus
compression occurs.
(1) Rotor (4) Rear head (7) Vane
(2) Refrigerant (5) Low-pressure chamber (8) Drive shaft
(3) Check valve (6) Rear side block
(1) Drive shaft (2) Refrigerant
B4H0745A
B4H0746A
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